Healthy McAvoy, Lindholm, and a coach with a mandate should get them over Buffalo and possibly Detroit with no other changes.
Not much on the FA market that moves the needle for the Bruins in one off-season. Toronto may lose Marner and blow up their core, Florida could lose Bennett and take a transitional step back. But I think Ottawa is ready to fill the gap those teams may leave.
Sweeney has a lot of work to do, and the answer to this depends on the route he wants to take. If he just wants to retool on the fly and buy some FAs, we can get into a wildcard spot probably. But long term we may be better off with a more patient rebuild and sacrifice next year.